Notice to end-users using Sigma's HSM equipped lens with Nikon D200 camera
2005.12.21
To our valued customers,

AF function of our HSM equipped lenses do not operate when "AF operation button" on the back of the body of Nikon "D200" digital SLR camera (recently introduced to the market by Nikon) is used. This problem is caused due to a firmware "bug" of our HSM equipped lenses.
 
We deeply regret any inconvenience this may cause our customers who own D200 camera and we are committed to making this situation right. In this respect, we will start updating firmware of these lenses free of charge today.

Please also note that if "shutter button" is used for AF operation of HSM equipped lenses, camera and lens combination works without any problem.

This problem occurs with  HSM equipped lenses only. Non-HSM models of Sigma lenses function properly with D200 camera.
List of lenses require update for D200 camera
Fixed Focal Length Lenses
14mm F2.8 EX ASPHERICAL HSM
30mm F1.4 EX DC HSM
APO MACRO 150mm F2.8 EX DG HSM
APO MACRO 180mm F3.5 EX HSM / APO MACRO 180mm F3.5 EX DG HSM
APO 300mm F2.8 EX HSM / APO 300mm F2.8 EX DG HSM
APO 500mm F4.5 EX HSM / APO 500mm F4.5 EX DG HSM
APO 800mm F5.6 EX HSM / APO 800mm F5.6 EX DG HSM
Zoom Lenses
10-20mm F4-5.6 EX DC HSM
12-24mm F4.5-5.6 EX DG ASPHERICAL HSM
17-35mm F2.8-4 EX DG ASPHERICAL HSM
APO 50-500mm F4-6.3 EX HSM / APO 50-500mm F4-6.3 EX DG HSM
APO 70-200mm F2.8 EX HSM / APO 70-200mm F2.8 EX DG HSM
* APO 80-400mm F4.5-5.6 EX OS / APO 80-400mm F4-5.6 EX DG OS
APO 100-300mm F4 EX HSM / APO 100-300mm F4 EX DG HSM
APO 120-300mm F2.8 EX HSM / APO 120-300mm F2.8 EX DG HSM
APO 300-800mm F5.6 EX HSM / APO 300-800mm F5.6 EX DG HSM
<Correction>
We have announced this problem was peculiar to only our HSM model lenses in our previous notice, however non-HSM Sigma APO 80-400mm F 4.5-5.6 EX OS is also added to list of lenses require update for D200 camera. Please refer to corrected table and also accept our apologies.
For further information, please contact to nearest authorized Sigma Service Station.
http://www.sigma-photo.co.jp/english/network/index.htm
Notice
Our head office will be closed between December 29th, 2005 and January 4th, 2006.  Since year-end and New Year holiday period is very close, updating the firmware by Sigma Service Center would take a little longer time than usual.
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